If the half-time of krypton-81 is 229,00 years, how much krypton-81 was present when the ice first formed

Which represents potential engery

In the atmosphere, under the effect of ultraviolet rays, oxygen molecules combine to form ozone molecules, and ozone molecules also photodissociate to form oxygen molecules.

The two rod-like parts that make up a chromosomes are called chromatids

What is electron configuration of sulfer?

A solution that contains all of the solute it can hold at a given temperature is A. diluted B. saturated C. supersaturated D. unsaturated

A compound that changes color when it comes into contact with an acid or base is an?

1. A food sample is burned in a calorimeter that contains 2000. g of water. The temperature increases from 22.0°C to 44.3 °C. How many Calories does the food sample contain, assuming all of the energy from the food was transferred into the water?

Why doesn't water light on fire? It has all the ingredients except heat! Hydrogen for the flammability factor, oxygen so it can keep burning, and all you need to do is add heat and BOOM you have a flame! 15 pts

The type of social bonds present in modern societies that are based on difference, interdependence, and individual rights is called:

The difference between ionic covalent and metallic bonding